The energy index rose 3.9 percent in January, accounting for over one-half of the overall CPI-U increase. The index for energy services rose 7.7 percent, largely as a result of a record monthly increase in the index for utility natural gas—up 17.4 percent. The index for petroleum-based energy was unchanged in January.

The food index increased 0.3 percent, following a 0.5 percent rise in December. Excluding food and energy, the CPI-U rose 0.3 percent in January, following an increase of 0.1 percent in December.

For the 12-month period ended in January, the CPI-U increased 3.7 percent.

Self-employment in the United States
Trends in self-employment by various demographic and socioeconomic characteristics, including both the unincorporated and the incorporated self-employed, as well as data on paid employees who work for the self-employed.